Novel polymers and photographic elements containing same

ABSTRACT

Polymers comprising quaternary nitrogen atoms and at least two aromatic nuclei in the polymer cation for each quaternary nitrogen atom are described. In one embodiment at least one-third of the units of said polymer comprise quaternary nitrogen atoms. In another embodiment polymers comprising at least two aromatic nuclei in the polymer cation, such as aryl groups, for each quaternary nitrogen atom can be used in photographic elements to provide excellent mordants for dyes.

United States Patent 1 Cohen et al.

NOVEL POLYMERS AND PHOTOGRAPHIC ELEMENTS CONTAINING SAME inventors: Hyman L. Cohen; James R. King,

Rochester, N.Y.

Filed: Dec. 21, 1970 Appl. No.: 100,491

Related US. Application Data Continuation-in-part of Ser. No. 709,812, March 1, 1968, abandoned.

US. Cl. ..96/67, 96/84, 96/114 Int. Cl ..G03c 1/76, G03c 1/72 Field of Search ..96/84, 67, 114

[ 1 Jan. 9, 1973 [56] References Cited UNITED STATES PATENTS 3,525,620 8/1970 Nisnio et al. ..96/l14 3,518,086 6/1970 Millard ..96/1 14 3,507,659 4/1970 Merriam et al ..96/l14 Primary Examiner-Norman G. Torchin Assistant Examiner-Edward C. Kimlin Attorney-R. W. Hampton, Bernard D. Wiese and Walter J. Parker, Jr.

[57] ABSTRACT Polymers'comprising quaternary nitrogen atoms and at least two aromatic nuclei in the polymer cation for each quaternary nitrogen atom are described. In one embodiment at least one-third of the units of said polymer comprise quaternary nitrogen atoms. In another embodiment polymers comprising at least two aromatic nuclei in the polymer cation, such as aryl groups, for each quaternary nitrogen atom can be used in photographic elements to provide excellent mordants for dyes.

3 Claims, No Drawings NOVEL POLYMERS AND PHOTOGRAPHIC ELEMENTS CONTAINING SAME This is a continuation in part of U.S. Ser. No. 709,812, filed Mar. 1, 1968 now abandoned.

This invention relates to novel polymeric compounds. In one aspect this invention relates to novel polymeric compounds which are good mordants for dyes used in photographic systems. in another aspect this invention relates to elements containing said polymers which are useful in photographic systems.

Various materials have been used as mordants in imbibition printing and in color photographic products etc. to prevent migration of dyes. Among the many mordants that have been employed are polymers containing acid salts such as are disclosed in US. Pat. No. 3,048,487 and US. Pat. No. 3,184,309 both to Hyman L. Cohen and Louis M. Minsk. Mordants of these types exhibit good dye retention under certain conditions. However, these mordants can diffuse out of the blanks in which they are used and into the matrix when contacted therewith. The result is that as repeated dye transfers are made from a given matrix more mordant diffuses into the matrix, combines with some of the dye and is held there.

The mordant-dye complex formed in the matrix increases with successive transfers, finally reaching a point where it interferes with the transfer process so that satisfactory images cannot be made. it thus becomes necessary to subject the matrix to a special treatment between transfers thereby increasing the cost of the process. This special treatment, in addition to its cost, very often has a deleterious effect upon the image quality-definition, for example. Thus, it is desirable to provide a mordant which is substantially free of matrix poisoning.

Therefore, it is an object of the invention to provide new mordant compounds.

It is another object of the invention to provide new polymeric mordants with improved characteristics for acid dyes.

It is another object of this invention to provide new compositions containing the dye mordants which can be used in photography.

it is still another object to provide new photographic elements containing certain mordants which do not develop high levels of matrix stain or matrix poisoning upon repeated use in dye transfer processes.

it is still another object to provide new photographic layers in a dye image-receiving element composing mordants which do not develop high levels of stain or dye.

It is still another object to provide a new light-filtering layer coated from a composition comprising a hydrophilic colloid and a dye mordant composition of this invention.

It is a further object to provide a photographic element comprising a support, a silver halide layer and at least one layer which comprises a polymer of this invention.

Another object is to provide a silver halide emulsion containing the polymer of this composition.

Still another object is to provide an integral negative receiver photographic element comprising a support having thereon a layer containing the polymeric mordant of this invention and at least one photosensitive silver halide emulsion layer of which has contiguous thereto a dye image-providing material.

These and other objects are accomplished using a polymeric compound composed of a polymer having quaternary nitrogen groups and at least two aromatic nuclei for each quaternary nitrogen atom in the polymer cation (i.e., having at least two aromatic nuclei for each positively charged nitrogen atom), said polymeric compound being substantially free of carboxy groups. Compared to the prior art quaternary nitrogen-containing mordants wherein the nitrogen atom is alkyl-substituted, the aryl or aralkyl group-substituted polymers of the invention have been found to be superior mordants. While definition may or may not be affected, matrix poisoning and stain are greatly reduced. Moreover, it has also been found that matrix staining or poisoning bears a direct relationship to the average number of aryl or aralkyl groups per nitrogen atom in the carbon portion of the copolymers of the invention. We have found that as the average number of aryl or aralkyl groups in the cation portion increases, the matrix stain or poisoning decreases. Thus, the greater the average number of aryl or aralkyl groups per quaternized nitrogen atom in the cation portion of the aryl or aralkyl-substituted, quaternized nitrogen containing interpolymers, the more effective the mordant from the standpoint of matrix stain or poisoning prevention. The only limitation placed on the number of aryl or aralkyl groups per nitrogen atoms present in the copolymer is that dictated by water or methanol solubility and compatibility with the hydrophilic colloids.

Preferred polymers according to this invention comprise units of the following formula in copolymerized relationship with units of at least one other ethylenically unsaturated monomer.

LS1 Lt. i

wherein R and R can each be hydrogen atoms, lower alkyl of one to six carbon atoms, such as methyl, ethyl, propyl, n-butyl, t-butyl, and the like, and R can additionally be a group containing at least one aromatic nucleus, including substituted aryl, e.g., phenyl, tolyl, naphthyl, etc.; Q can be a divalent alkylene or arylene or aralkylene or arylenealkylene radical such as other radicals including where R"- is an alkylene radical typically having one to four carbon atoms or R can be taken together with Q to form a group; R and R, and R are lower alkyl including substituted alkyl, e.g., aralkyl, cyanomethyl, alkoxymethyl, carboalkoxymethyl, carbamoylmethyl, etc., aryl ineluding substituted aryl, e.g., phenyl, naphthyl, tolyl, etc, or R and R and the nitrogen atom to which they are attached can be taken with Q to represent the atoms and covalent bonds necessary to form a quaternized nitrogen-containing heterocyclic ring such as a 2- pyridinium ring; and X ma nesia.ataszavaamz afive salt forming radical or atom in ionic relationship with the positive salt forming radical or polymer cation, such as a halide, alkyl sulfate, sulfonate, for example, such as p-toluenesulfonate, dialkyl phosphate, and the like; wherein said polymer is substantially free of carboxy groups and wherein said polymer cation, i.e., the positive salt forming radical of said polymer comprises at least two aromatic nuclei for each quaternary nitrogen atom in said polymer. In one embodiment of the invention one-third of said polymer is comprised of units represented by said formula. It is to be understood that Q cannot be taken together simultaneously with R and R and R The polymers of the invention are water or methanol soluble polymers having a polyhydrocarbon backbone and are composed of recurring units supplying quaternized nitrogen atoms and having at least two aromatic nuclei, such as aryl groups, e.g., phenyl, pyridinium, etc., per quaternized nitrogen atom. The polymers should be substantially free of carboxy groups for the presence of carboxy groups in the interpolymers interferes with effective dye mordanting.

It is understood that the aromatic nuclei can I be located on any unit of the polymeric chain as long as there are two aromatic nuclei for each quaternized 60 diethylaminomethyl)phenyl]maleimide},

nitrogen atom in said polymer. In one preferred embodiment at least one of R, R or R in the above formula contain an aromatic nucleus. The aromatic nuclei contain at least five carbon atoms often 5-12 carbon atoms and can be represented by the structure:

.naphthylpropyl, biphenylyl, alkyl substituted phenyls,

and the like. In general at least about one-third of the reoccurring units in the polymers which are good dye mordants contain quaternary nitrogen atoms.

The mordants of the invention are generally prepared by quaternizing an intermediate polymer having tertiary nitrogen atoms with an alkylating or am!- kylation agent. The method of preparation of the intermediate polymer containing the tertiary nitrogen atoms for subsequent quaternization is not critical. Any of the methods known in the art such as mass, solution, or bead polymerization, as well as condensation polymerization, can be used, and the catalysts known to the art such as ultra-violet light, peroxides, azo compounds, e.g., azobisisobutyronitrile, etc. can be employed.

It is often advantageous to prepare the intermediate basic polymers as derived polymers such as, for example, the styrene-maleimide polymers described in Cohen and Minsk US. Pat. No. 3,048,487 which are made by the reaction of a maleic anhydride interpolymer and a dialkylaminoalkylamine. Typical suitable intermediate polymers include copoly[styrene-N- (S-dimethylaminopropyl)acrylamide], copoly{styrene- N-( B-dimethylaminopropyl )maleimide copoly(styrene-Z-dimethylaminoethyl methacrylate), copoly(styrene-4-vinylpyridine poly( 2-vinylpyridine), copoly 2-vinylnaphthalene-N-( 3- dimethylaminopropyl)-maleimide copoly[4-vinylbiphenyl-N-( 3-dimethylaminopropyl)-m aleimide] copoly{styrenel ,1 ,4,4-tetramethylbutadienel -[2- (N,N-diethylamino )ethyl] maleimide copoly[pnitrostyrenel N,N-dimethylaminomethyl)maleimide copoly {o-methylstyrenel 3-( N ,N-dibutylamino)propyl]maleimide} copoly{ 2 ,4- dichlorostyrene-N-[4-(N,N-dimethylamino )butyl] acr ylamide} copoly {4-methylstyrene-N-[2-(N ,N diethylamino)ethyl]methacrylamide} copoly{styrene- N-[ 2-(N ,N-dimethylamino)ethyl]acrylamide copoly{ 4-cyanostyrene-N-[2-(N ,N- dimethylamino )ethyl]acrylamide copoly{ 4- chlorostyrene-N-[2-(N',N'-dibenzylamino)ethyl ]acrylamide}, copoly{vinyl benzoate-vinyl-a-(N,N- dimethylamino)acetate], copoly- {benzyl acrylate l 3 -(N,N-dimethylamino )propyl]-maleimide} copoly phenyl acrylate-N-[3-(N',N'-diethylamino)- propyl]methacrylamide}, copoly{2-methylstyrene-N-[ 2-(N,N'-diethylamino)ethyllmethacrylamide copoly {styrenel -[-(N,N-dimethylamino)phenyl]maleimide} copoly{styrene-l-[4-(N,N-diethylamino)phenyl]mal eimide} copoly{4-nitrostyrene-l-[4-N,N- copoly {styrene-1-[4-(N,N-dimethylaminomethyl)phenyl] maleimide} copoly{ styrene- 1 -[4-(N ,N- dimethylaminomethyl )benzyl] poly 2- 5 methyl-S-vinylpyridine), and the like.

mole percent, the remainder of the units being derived W from other ethylenically unsaturated monomers. OHPCH {CHCH In an alternate embodiment, the quaternary l y nitrogen-containing mordants of this invention can be prepared by reacting an intermediate polymer having NH recurring units containing an active halogen group, for 31 9 example, a chloro-acetyl group, with a tertiary amine, CHPNAJHJ preferably a tertiary amine containing at least one aryl or aralkyl group attached to the nitrogen atom, to obtain directly the quaternary nitrogen-containing mordants of the invention. intermediate polymers which can be employed in this procedure include poly(vinyl chloroacetate) and copolymers of vinyl chloroacetate and other ethylenically unsaturated monomers. Typical suitable tertiary amines which may be employed in this alternate procedure include N,N-dimethylbenzylamine, N,N-dibenzylmethylamine, N,N-

Copoly[st yreiie: N-( 3-acrylamidopropyl)-N,N- dimethyl-N-(4-nitro-benzyl)ammonium chloride].

dimethylnaphthylmethylamine, pyridine, and the like.

Typical ethylenically unsaturated monomers which A can be used to form ethenic interpolymers, including copolymers, terpolymers and the like, according to this NH invention include ethylene, propylene, l-butene, isobu- 9 tene, 2-methylpentene, 2-methylbutene, 1,l,4,4,- C1

tetramethylbutadiene, styrene, alphamethylstyrene; monoethylenically unsaturated esters of aliphatic acids such as vinyl acetate, isopropenyl acetate, allyl acetate, etc.; esters of ethylenically unsaturated monoor dicar- I boxylic acids such as methyl acrylate, methyl methacrylate, ethyl acrylate, diethyl 3Q methylenemalonate, etc.; monoethylenically unsatu- CopolylIstyrene; N..(3.acrylamidopropyl) N N rated Compounds Such as acrylonitrile, y y dimethyl-N-(1-naphthylmethyl)ammonium chloride]. and dienes such as butadiene and isoprene. In one em- 7 bodiment a preferred class of ethylenically unsaturated CH2-CH {CH--CH}-] monomers which may be used to form the ethenic x y polymers of this invention includes the lower l-alkenes having from one to six carbon atoms, styrene, and N tetramethylbutadiene. 5 9

Quaternization of tertiary nitrogen-containing groups in the interpolymer of the invention may be ef- 40 H2 fected by using an alkylating or arylating agent which can be represented by the structure R X wherein R is as defined above, and X is a negative monovalent saltforming atom or radical such as monoalkyl sulfate, sulfonate, dialkyl phosphate, halide, etc. Examples of suitable R groups are methyl, ethyl, propyl, butyl, pentyl, and the like, phenyl, naphthyl, benzyl, phenethyl, phenylpropyl, naphthylmethyl, naphthylpropyl, and the like. The quaternizing agent selected can depend of course on whether or not the nitrogen atom appended to the interpolymer chain already contains an aromatic Copoly[styrene: N-(3-maleimidopropyl)-N,N- dimethyl-N-(4-phenylbenzyl)ammonium chloride].

nucleus attached thereto. The quaternization may be CHa effected in a solvent such as water, acetone, benzene, K dimethylformamide, dimethylsulfoxide, dimethylacetaj, j, mide, or an alcohol such as methanol, ethanol, :0 isopropanol, 2-ethoxyethanol, (Cellosolve) and the like. Generally the quaternization is carried out to (13H, 9 quaternize at least 30 percent and preferably 50 per- 01 cent of tertiary nitrogen atoms. Temperatures from 5 room temperature to 125C. are generally used and if CH;N-CH: quaternization of only a part of the tertiary nitrogen atoms is desired, the amount of quaternizing agent may be reduced to correspond with the number of tertiary nitrogen atoms to be converted. Some compounds which illustrate the mordants of the invention are the following:

including ethylene, isobutylene, propylene, 2-methylbutene, 2-methylpentene, Z-methylhexene, 2-methylheptene, 2-methyloctene, 1 ,1 ,4,4-tetramethylbutadiene and alkyl or aryl acrylates such as methyl acrylate and phenyl acrylate, or alkyl or aryl methacrylates, such as methyl methacrylate and phenyl methacrylate. This invention can be further illustrated by the following examples of preferred embodiments thereof although it will be understood that these examples are included for purposes of illustration.

Example 1 and dried at room temperature under reduced pressure. Yield 38 g of water-soluble product.

Anal. Calcd.: CI, 8.2; N, 9.8.

Found: Cl, 6.5; N, 7.7.

Example 11 Preparation ofCopoly[styrene N-(3- Acrylamidopropyl)-N,N-dimethyl-N-( lnaphthylmethyl)ammonium Chloride] Into a 500 ml, three-neck flask fitted with a magnetic stirrer, condenser, and thermometer is placed 250 ml of distilled dimethylformamide and 13 g (0.05 mole) of copoly(styrene 3-dimethylaminopropylacrylamide). This mixture is stirred to a homogeneous solution at room temperature at which time 17.6 g (0.1 mole) of lchloromethylnaphthalene is added in bulk. The solution is then stirred at ambient temperature for 48 hours, then at 96C. for 1 hour. The viscous dope is filtered by suction and the filtrate is poured into 2 liters of manually stirred diethyl ether. The precipitate is hardened and washed in fresh diethyl ether overnight. The precipitate is filtered and dried at room temperature under reduced pressure. Yield 19.6 g, soluble in (3-1 water methanol.

Anal. Calcd.: Cl, 8.1; N, 6.4.

Found:Cl, 8.3;N, 6.3.

Example 111 (styrene N,N-dimethylaminopropylacrylamide) dissolved in 150 ml of benzyl alcohol is added 12.6 g (0.1

To a solution of 14.3 g 0.05 mole) OF co ol f mole) of alphachlorotoluene. The resulting solution is then tumbled for 48 hours at 30C. The viscous dope is poured into 1.5 liters of stirred diethyl ether. The precipitate is filtered off, washed and hardened in fresh ether, filtered off and dried at room temperature under reduced pressure. Yield 15.4 g of water-soluble product.

Anal. Calcd.: C, 71.1; H, 8.3; Cl. 9.1; N, 6.6.

Found: C, 71.5; H, 8.3; CI. 7.3; N, 6.3.

Example lV Into a 500 ml, 3-neck flask fitted with mechanical stirrer, condenser, and thermometer, is placed 14.3 g (0.05 mole) of copo1y[styrene N-(3- dimethylaminopropyDmaleimide] and 250 ml of distilled dimethylformamide. This mixture is stirred to a homogeneous solution at room temperature at which time 20.2 g (0.1 mole) of 4-chloromethylbiphenyl is added. The mixture is stirred at ambient temperature for 48 hours then at 96C. for 1 hour. The viscous dope is filtered by suction and the filtrate is poured into 2 liters of manually stirred diethyl ether. The precipitate is hardened and washed in fresh diethyl ether overnight. The precipitate is then filtered by suction and dried at room temperature under reduced pressure. Yield 12 g of water-soluble polymer.

Example V Preparation of Copoly[styrene N-(2- methacryloyloxyethyl) -N,N-dimethyl-N- benzylammonium Chloride] lnto a 500 ml, 3-neck flask fitted with magnetic stirrer, condenser and thermometer, is placed 250 ml of distilled dimethylformamide and 13 g (0.05 mole) of copoly (styrene Z-dimethylaminoethyl methacrylate). This mixture is stirred to a homogeneous solution at room temperature at which time 12.6 g (0.1 mole) of alpha-chlorotoluene is added. The solution is stirred at ambient temperature for 48 hours, then at 96C. for 1 hour. The dope is then precipitated into 2 liters of manually stirred diethyl ether. The precipitate is washed and hardened in fresh diethyl ether overnight. The precipitate is filtered by suction and dried at room temperature under reduced pressure. Yield 17.7 g of water-soluble product.

Anal. Calcd.: Cl, 9.2; N, 3.7.

Found Cl, 9.4; N, 3.6.

Example VI Preparation ofTerpoly(styrene 4-Vinyl'N- benzylpyridinium Chloride 4-Vinylpyridinium Acetate) In a 500 ml, 3-neck flask, fitted with condenser, magnetic stirrer, and thermometer, is prepared a solution of 20.9 g (0.1 mole) of copoly(styrene 4-vinylpyridine) in 200 ml benzyl alcohol at room temperature. To this solution is added 25.2 g (0.2 mole) of alphachlorotoluene and the solution is stirred at ambient temperature for 20 hours. The solution is then stirred and heated a t C. for 1 hour. The dope is slowly Thedried product is dispersed in distilled water and just enough acetic acid was added to effect solution.

Example VII Preparation of Copoly[2-vinylpyridine 2-vinyl-N-( lnaphthylmethyl)pyridinium Chloride] Into a 500 ml, l-neck flask fitted with condenser and magnetic stirrer, is placed a solution of 21 g (0.2 mole) of poly(2-vinylpyridine) dissolved in 250 ml of dimethylforamide. To this solution is added 52.8 g (0.3 mole) of 1-chloromethylnaphthalene. The solution is stirred and heated at 80C. for 42 hours. The viscous dope is poured into diethyl ether and the resulting precipitate is washed in fresh diethyl ether. The precipitate is filtered by suction and dried at room temperature under reduced pressure. Yield 22 g of watersoluble product.

Anal. Calcd.: Cl, 12.5; N, 4.9.

Found: Cl, 7.8; N, 9.5.

Example V111 Quaternization of Copoly[styrene Dim ethylaminopropylmaleimide ]with l- Chloromethylnaphthalene A solution of 6.5 g of copoly[styrene dimethylaminopropylmaleimide]and 3.8 g of 1- chloromethylnaphthalene in 100 ml of benzyl alcohol is 40 heated on a steambath overnight. The mixture is' Example IX Quaternization of Copoly[styrene Dimethylaminopropylacrylamide]with 1- Chloromethylnaphthalene A solution of g of copoly[styrene dimethylaminopropylacrylamide]7.0 g

chloromethylnaphthalene in 100 ml benzyl alcohol is. heated overnight under nitrogen in a 100C. bath. The= mixture is cooled, isolated and purified as in Example V111. Yield 10 g of product soluble in warm water andmethanol.

Anal. Calcd.: C, 71.5; H, 8.1; N, 5.6; Cl, 7.6.

Found: C, 74.4; H, 7.6; N, 6.4; Cl, 8.1.

Example X Quaternization of Copoly[styrene Dimethylaminoethyl Methacrylate] with l- Chloromethylnaphthalene A 'iiiififi BF 5 g of copoly[styrene dimethylaminoethyl methacrylate] and 10 g of 1- chloromethylnaphthalene in 50 ml of dimethylformamide is heated overnight in a C. bath. The mixture is cooled and the product isolated and purified as in the previous example. Yield 7 g of product soluble in water and methanol.

Anal. Calcd.: C, 74.1; H, 7.3; N, 3.2; Cl, 8.1.

Found: C, 69.8; H, 7.4; N, 3.4; Cl, 8.6.

' Example XI' Preparation of Copoly[N-acrylamidopropyl-N,N- dimethyl-N-vinyloxycarbomethylammonium Chloride N-Benzyl-N,N-dimethyl-N-viny loxycarbomethylammonium Chloride] A solution of 36 g (0.3 mole) of poly(vinyl chloroacetate) and 20.25 g (0.15 mole) of dimethylbenzylamine in 500 ml dimethylformamide is allowed to stand overnight at room temperature. The mixture is precipitated in ether, washed and vacuum dried.

Ten grams of this solid (0.0267 mole), 7.7 g. (0.25 mole) of dimethylaminopropylacrylamide and 150 m1 of dimethylformamide is tumbled overnight. The solution is precipitated in diethyl ether, washed with acetone and vacuum dried. Yield 10.5 g.

Anal. Calcd.: C, 56.2; H, 7.4; Cl, 13.3; N, 7.9.

Found: C, 56.1;H, 7.4; Cl, 12.9; N, 6.4.

" Example X11 Preparation of Copoly[2-vinylnaphthalene N-( 1- Naphthylmethyl) -N,N-dimethyl-N- maleimidopropylammonium Chloride] Nine grams of 1-chloromethylnaphthalene is added to a solution of 9 g of copoly[2-vinylnaphthalene dimethylaminopropylmaleimide]in 32 ml of dimethylformamide. After tumbling for 3 days, the mixture is precipitated in ether, washed and vacuum dried. Yield 12.7 g.

Anal. Calcd.: C, 74.3; H, 7.2; Cl, 6.9; N, 5.4.

Found: C, 71.1; H, 6.6; Cl, 6.6; N, 5.7.

Example XIII Preparation ofCopoly[styrene-N-( 3- dimethylaminopropyl)maleimide]it A solution of 250 g of copoly(styrene-maleic anhydride) (commercially available from the Monsanto Chemical Company under the tradename of Lytron 810) in 2,500 m1 of dry dimethylformamide is made by stirring in a 5-liter flask, containing a reflux condenser, thermometer, stirrer, and dropping funnel. The mixture is heated to C and 230 g of N,N-dimethyl-l,3- propanediamine is added slowly at a rate to keep the mixture boiling slightly. Polymer precipitates as a gummy mass at first but goes back into solution after about half of the amine is added. The condenser is replaced by a distillation column and about 500 ml of material is removed by distillation with stirring. The residue is cooled, precipitated in water, collected by filtration and air-dried at room temperature for 2 days. The solid is dissolved in acetone, and again precipitated in water and air-dried. Yield 260 g of off-white, friable solid.

Anal. Cal. for C17H22N20gi C, 71.4; H, N, 9.8

Found: C, 72.0; H, 7.5; N, 9.0

EXAMPLE XIV Preparation of Copoly[styrene-N-benzyI-N,N- dimethyl-N-(3-maleimidopropyl)ammonium Chloride] The polymer prepared in Example XIII above (I g) is dissolved in 1,100 ml of N,N-dimethylformamide and 100 g of benzyl chloride is added rapidly with stir- EXAMPLE XV Single Layer Dye lmageReceiving Element Containing Copoly[styrene-N-benzyI-N,N-dimethyI-N-( 3- maleimidopropyl)ammonium Chloride] as Polymeric Mordant without Vehicle A dye image-receiving element is prepared by coating the following liquid composition on a polyethylene coated paper support.

Polymeric mordant (6% aqueous soln.)

Coating aid (5% aqueous soln.)

Distilled water to 500 g The polymeric mordant is prepared in a manner after Examples XIII and XIV.

* The coating aid is isoctyl phenyl polyethoxy ethanol (commercially available from Rohm and Haas under the tradename of Triton X-IOO) 480g lOg The coating is prepared to contain 200 milligrams of the polymeric mordant per square foot of support.

The element thus formed is then tested by employing the photosensitive element and process as described in Example I of Beavers and Bush U.S. Pat. No. 3,445,228. After completion of development, the receiving element is separated from the photosensitive element, resulting in the transfer of a well-defined dye image having relatively good color balance and dye stability.

EXAMPLE XVI Multilayer Dye Image-Receiving Element Containing Copoly[styrene-N-benzyl-N,N-dimethyI-N-( 3- maleimidopropyl)ammonium Chloride] as Polymeric Mordant in Gelatin and a Polymeric Acid Scavenging Layer A dye image-receiving element is prepared by coating the following liquid composition as the top most layer of a polyethylene coated paper support containing a polyacrylic acid layer:

Gelatin (|O% aqueous soln.) 56.0 g Polymeric mordant (6% aqueous soln.) 37 I .0 g

Coating aid* (5% a uo'tIsZSEi" h I l0.0 ml Formaldehyde IO% aqueous soln.) 0.3 ml

Distilled water to 500 g The polymeric mordant is prepared in a manner after Examples XIII and XIV.

" The coating aid is isoctyl phenyl polyethoxy ethanol (commercially available from Rohm and Haas under the tradename of Triton X-IOO).

The coating is prepared to contain 200 milligrams polymeric mordant and 50 milligrams gelatin per square foot of support.

The element thus formed is then tested by employing the photosensitive element and process as described in Example I of Beavers and Bush U.S. Pat. No. 3,445,228. After completion of development, the receiving element is separated from the photosensitive element, resulting in the transfer of a well-defined dye image having relatively good color balance and dye stability.

EXAMPLE XVII Preparation of Poly[2-methyl-5-vinylpyridine: I-

Benzyl-2-methyl-S-vinyIpyridinium Chloride] A solution of 17 g of poly( Z-methyI-S-vinylpyridine) (commercially available from the lonac Chemical Co., Division of Pfaudler Co., Birmingham, N.J., as lonac Resin PP-2020X) in I ml methoxyethanol and 15 g of benzyl chloride is heated on a steampot for 72 hours. The solution is cooled, precipitated in ethyl acetate washed and vacuum dried. The solid is dissolved in methanol, precipitated in ether, washed and vacuum dried. Yield: 26.4 g.

Anal. CaI.:C, 73.3; H, 6.5; N, 6.7;Cl, 14.5

Found: C, 65.0; H, 6.9; N, 6.2; CI, 12.4

EXAMPLE XVIII Multilayer Dye Image-Receiving Element Containing Copoly[2-methyI-5-vinyI-pyridine: l-BenzyI-Z-methyl- S-vinylpyridinium Chloride] A dye image-receiving element is prepared by coating poly(methyl vinyl ether/maleic anhydride) on a polyethylene coated paper support. On the polymeric acid anhydride layer is coated a white pigmented interlayer formed from TiO and a polymeric binder, in accordance with the teaching of Beavers and Bush, U.S. Pat. No. 3,445,228. Over this layer is coated the following composition containing the above polymeric mordant:

Gelatin (10% aqueous soln.) I54 g Polymeric Mordant IO% aqueous soln.) 308 g Formaldehyde I0% aqueoust soln.) I.54 ml Coating Aid (5% aqueous soln.) 10 ml Distilled water to 500 g The polymeric mordant is prepared in a manner after Example XVIII.

* The coating aid is isooctyl phenyl polyethoxy ethanol (commercially available from Rohm and Haas tradename of Triton X-IOO).

The polymeric mordant coating is prepared to contain 400 milligrams of polymeric mordant and 200 milligrams of gelatin per square foot of support.

The element thus formed is then tested by employing the photosensitive element and process as described in Example I of Beavers and Bush U.S. Pat. No. 3,445,228. After completion of development, the

receiving element is separated from the photosensitive element, resulting in the transfer of a well-defined dye image having relatively good color balance and dye stability.

Mordanting amounts of the novel polymers of the invention can be employed as such from an aqueous or methanolic medium, or can be incorporated in waterpermeable hydrophilic organ colloids or other polymeric binder materials and the resulting mixture used in the preparation of dye im bibition printing blanks, receiving layers for color transfer processes,

such as those described in Land U.S. Pat. No/ 3,362,819, Rogers U.S. Pat. No. 2,983,606, Whitmore U.S. Pat. No. 3,227,552 and U.S. Pat. No. 3,227,550, and in antihalation layers such as those described in Jones et a1. U.S. Pat. No. 3,282,699. Satisfactory colloids which can be used for this purpose include any of the hydrophilic colloids generally employed in the photographic field, including, for example, gelatin, colloidal albumin, polysaccharides, cellulose derivatives, synthetic resins such as polyvinyl compounds, including polyvinyl alcohol derivatives, acrylamide polymers and the like. In addition to the hydrophilic colloids, the vehicle or binding agent can contain colloids such as dispersed polymerized vinyl compounds, particularly those which increase the dimensional stability of photographic materials. Suitable compounds of this type include water-insoluble polymers and copolymers of alkyl acrylates or methacrylates. In general a mordanting amount can be employed in a dye mordanting or dye image-receiving element layer. A binder may or may not be used along with the polymeric mordant in the layer. The amount of dye mordant to be used depends on the amount of dye to be mordanted, the mordanting polymers, the imaging chemistry involved, etc. The amount can be determined easily by one skilled in this art. The dye image-receiving element can comprise a support having the polymeric mordant of this invention thereon. The element may also comprise other layers, such as a polymeric acid layer, and can also include a timing layer as taught in U.S. Pat. No. 3,362,819 or a light reflective interlayer comprising a light reflective white pigment such at TiO and the polymeric binder in accordance with the teaching of Beavers and Bush U.S. Pat. No. 3,445,228.

TF5 mordanting polymers of this invention are also especially useful in light-filtering layers, such as in antihalation layers of the type disclosed in Jones and Milton U.S. Pat. No. 3,282,699. Here the light-filtering layer preferably can comprise a hydrophilic colloid and the polymer of this invention. The layer is adapted to contain a dye held or fixed by the mordant.

1h addition, the novel mordants of this invention can also be employed in integral negative-receiver photographic elements such as those-described in U.S. application Ser. No. 27,990 of Cole, filed Apr. 13, 1970, U.S. application Ser. No. 27,991 of Barr et al., filed Apr. 13, 1970 and U.S. Pat. No. 3,415,644 issued Dec. 10, 1968. In general, these integral photographic elements comprise a support having thereon a layer containing one or more of the novel mordants described herein and at least one photosensitive silver halide emulsion layer, the silver halide of which has contiguous thereto a dye image-providing material.

When a water-permeable colloid is used, the quantity of mordant employed can be varied, depending upon the particular mordant and its chemical characteristics, as well as the dyes to be fixed in the mordanting layer. In general, the quantity of mordant should be at least 10 percent by weight, based on the weight of hydrophilic colloid. Larger amounts of mordant can be employed in the hydrophilic colloid layers and amounts as high as 50 percent by weight, based on the weight of the hydrophiliecolloid, give quite useful results. 7

The mordants can also be used for fixing the dyes, and particularly acid dyes, used in the preparation of photographic filter, antihalation and gelatino-silver-halide emulsion layers. Such layers can be coated on conventional photographic supports, such as flexible sheet supports (e.g., cellulose acetate, polyester films, polyvinyl resins, etc.) or paper, glass, etc.

More than one of the mordanting polymers of this invention can be used together, in a single layer or in two or more layers. The mordanting polymers of this invention can also be used in admixture with other mordants in the same layer or in separate layers of the same element.

The layers containing the polymers of this invention can be prepared from not only aqueous systems but also methanol or alkaline compatible systems as well.

The emulsions containing the interpolymers can be chemically sensitized with compounds of the sulfur group, noble metal salts such as gold salts, reduction sensitized with reducing agents, and combination of these. Furthermore, emulsion layers and other layers present in photographic elements made according to this invention can be hardened with any suitable hardener such as aldehyde hardeners, aziridine hardeners, hardeners which are derivatives of dioxane, oxypolysaccharides such as oxystarch, oxy plant gums, and the like. The emulsion can also contain additional additives, particularly those known to be beneficial in photographic emulsions, including for example, stabilizers or antifoggants, particularly the water soluble inorganic acid salts of cadmium, cobalt, manganese and zinc as disclosed in U.S. Pat. No. 2,829,404, the sub-.

stituted triazaindolizines as disclosed in U.S. Pat. Nos. 2,444,605 and 2,444,607, speed increasing materials, plasticizers and the like.

Mordanted blanks treated in accordance with this invention are useful for receiving acid dyes from hydrophilic colloid relief images according to prior art techniques. Typical acid dyestuffs which can be transferred to the treated blanks of the invention are Anthracene Yellow GR (400 percent pure Schultz No. 177), Fast Red S Cone. (Color Index 176), Pontacyl Green SN Ex. (Color Index 737), Acid blue black (Color Index 246), Acid Magenta 0 (Color Index 692), Naphthol Green B Cone. (Color Index 5), Brilliant Paper Yellow Ex. Conc. percent (Color Index 364), Tartrazine (Color Index 640), Metanil Yellow Cone. (Color Index 138), Pontacyl Carmine 68 Ex. Cone. (Color Index 57), Pontacyl Scarlet R Conc. (Color Index 487) and Pontacyl Rubine R Ex. Conc. (Color Index 179).

The mordants of this invention are evaluated for their degree of matrix poisoning in an lmbibition Dye Transfer Process as follows:

To a fine grain silver bromoiodide emulsion containing 295 g of gelatin/mole of silver halide, there is added some saponin solution as a coating aid, 42 cc of 50 percent aqueous glycerine, and 17.5 cc of a 10 percent formaldehyde solution. The emulsion is coated on a cellulose ester support at a coverage of approximately 390 mg of silver/ft".

Mordant (1.2 g and gelatin (2.7- g) are dissolved at 40C. in sufficient water to make a total weight of 100 g of solution. The pH of the solution is adjusted to 4.2, and 0.17 cc of a 10 percent aqueous solution of formaldehyde is added. This solution is then coated over the which is talt en as ah indication of the degree of matrix poisoning.

The matrix for each transfer is dyed for 2 minutes 50 seconds in an acid dye bath at a temperature of about 5 90F. The dyed matrix is removed from the dye bath, allowed to drain 10 seconds, washed for 15 seconds in running water at a temperature of 80F. and immediately blown off with an air squeegee to remove surface water. The dyed matrix is then rolled into contact with a strip of the mordanted film coating which has been soaked in distilled water for 1 minute 15 seconds at room temperature. The two strips are held in contact for 45 seconds while maintaining the temperature at l05F. At the end of 45 seconds the matrix and transfer are separated. The mordanted coating containing the transferred dye image is placed in a nonhardening acid fix bath to remove the silver halide after which it is given a short wash and dried. The matrix is then washed approximately for 1 minute in running water, squeegeed and redyed for the next transfer in the series.

The mordants tested are identified in the following Table 1.

Reference number General formula R X A CHa-(control) C1H1SOa -CCHZCH\ CHzCI-I 1 NH 2k e X CH3N --CHa B..QI.llEQQQIQBBQIIQI l. '7 -CHz- Cl 0-..: .410 .III ii D d0 Same as above Cl E .:d n V iflfiilf 7 R dfil anirdi .I. (Jaim CH2-CH- CH-CH l. l 2730/ =0 i 3 (CH2): X cm-N -cm HINQLQQ: siini ga bgv n U d0 C19 TABLE 1.MORDANTING RESULTS C0nlinued Reference number Generalformula R X i CH; CH: (co

- CH2--CH (CHz-(El $=a I $11, x CHaN CHa J h m muhnw 6 n l -(?lh- Cl k .1l0 C h' 9 L CHa-- (control) 6 CH CH C1H1SO: x A

M Same as above C1 CHg N 0H3- (control) C1H1SO3 /CH2CH) CHCH 3 =0 N (+Hz)a CHa-NCHa 0 Same as above Cl P I V H l e /OH, CH\ n C a (contro) 0111180:

Q Same as above C1 CI-I2 R ..d I I 01 The testing results are reported in the following Table 2:

TABLE 2 Mordanting Results Rel'. Matrix Definition Density Nu. Slain vs V vs Z Remarks A 0.1 l Definition only slightly less 8 0.07 Definition equal on first transfer but degraded after the first.

E 0.02 Hazy after processing.

l 0.1 I Image poisoning after first transfer.

L 0.13 to Density decreased with successive transfers.

M 0.0l No visible matrix poisoning after the sixth transfer.

N 0.1 1 Image poisoning.

O 0.0l Density slightly less.

P high Bad image poisoning after first transfer.

R 0.28 Image poisoning.

* Z The guanylhydrazone of poly( methyl vinyl ketone) is used as a standard mordant for comparison (See US. Pat. No. 2,945,006).

following Table 3.

Com-

pound Name Structure I Copo1y(methacrylle acid-N, N-diethyl-N- methyl-N- methaeryloyloxyethylammoru'um p-toluenesultonate) ethyl-N-mcthyl-N-methaeryloyloxyethylammonium ptoluencsulfonate) F iil rnnjfrifizjilfi ii methyl-pyrldin- CII:CII---- ium p-toluene- Sultonate). e

II IhSOa IV The guanylhydrazone of poly CH1CH (methyl vinyl A Mr ketone) glycollc acid salt. C=N-NII("JHOCH2COOH CH3 NHz V PolylN-(Ii-acryl- 5 amidopropyb- CH2-CH N,N,N-tri- )n methy1ammonium p-toluene- =0 sultonate]. l

NH 2): :4)a

VI CopoIy[styrene V N-(3-aery1ami- -CHzCH C H1CH dopropv1 -N.N. A l J.

N-trlmethylsml monium p-tolu- 6H5 C=O enesulfonate].

N(CH3)3 CrHrSOa VII... Co oly[styrcne- I\ I -(3-acrylami CHzCH CHgCH- dopro yl(-N- l j: s y n benzy -N,N-dimethylammo- 0H5 C=O nlum chloride.

INII (011:); 40 (CHaI N CH;

The results of the tests are reported in Table 4 below.

TABLE 4 Resolution Matrix Compound Lines/mm Stain Comments I This mordant permits diffusion of the dye and is unsatisfactory. It produces fog and increases threshold speed in emulsions in contact with filter layers. It High 28 This mordant gave excellent definition. at least as good as Compound Ill, and a transfer density just slightly lower than Compound I". ll! 30 High 028 IV 42 0.07 V 30 High O.28 VI 42 0. l VII 42 0.07 Vlll 42 0.02 [X Oil l wherein R and R are hydrogen atoms or lower alkyl groups and R can additionally be a group containing at least one aromatic nucleus; Q can be a divalent alkylene radical, a divalent arylene radical, a divalent aralkylene radical, a divalent arylenealkylene radical,

wherein R is an alkylene radical, or R can be taken.

together with Q to form a group; R", R and R can be lower alkyl or aryl groups, or R" and R and the nitrogen atom to which they are attached can together with Q represent the atoms and bonds necessary to form a quaternized nitrogen-containing heterocyclic ring, and XX is a monobalent negative salt forming radical or atom in ionic relationship with the positive salt forming radical; wherein said polymer is substantially free of carboxy groups and wherein the positive salt forming radical of said polymer comprises at least two aryl groups for each quaternary nitrogen atom in said polymer.

2 A photographic element comprising a support having thereon at least one photosensitive silver halide emulsion layer and a dye image receiving layer comprising a polymer having at least one-third of the units represented by the following formula in copolymerized relationship with units of at least one other ethylenically unsaturated monomer wherein R and R are hydrogen atoms or lower alkyl groups and R can additionally be a group containing at least one aromatic nucleus; Q can be a divalent alkylene radical, a divalent arylene radical, a divalent aralkylene radical, a divalent arylenealkylene radical,

O O O wherein R is an alkylene radical, or R can be taken together with Q to form a group; R, R and R can be lower alkyl or aryl groups, or R and R and the nitrogen atom to which they are attached can together with Q represent the atoms and bonds necessary to form a guaternized nitrogen-contaming heterocyclic ring, an X 15 a monovalent negarepresented by the following formula in copolymerized I relationship with units of at least one other ethylenically unsaturated monomer:

wherein R and R are hydrogen atoms or lower alkyl groups and R can additionally be a group containing at least one aromatic nucleus; 0 can be a divalent alkylene radical, a divalent arylene radical, a divalent aralkylene radical, a divalent aryleneall cylene radical, group; R and R can be lower alkyl or aryl groups, or R" and R and the nitrogen atom to which they are 0 0 0 attached can together with Q represent the atoms and yj ()Rfl-" o g-Rfl- 01' g-NHR bonds necessary to form a quaternized nitrogen-containing heterocyclic ring, and X is a monovalent negawherein R is an alkylene radical, or R can be taken tive salt forming radical or atom in ionic relationship together withQto forma with the positive salt forming radical; wherein said I polymer 15 substantially free of carboxy groups and wherein the positive salt forming radical of said polymer comprises at least two aryl groups for each quaternary nitrogen atom in said polymer. 3

53 33 UNITED STATES PATENT omen CERllFlCAlE F CEC'HCN Patent No. 3 Z09, 690 Dated January .9, 1973 I s Invencofls) Hvman L. Cohen; James R. King, Jr. Louis M. Minsk It is certified that error appears in theabove-identified patent and that said Letters Patent are hereby corrected as shown below:

E- Column 3 line 35, "X" should read ---X Column L line 57, "E(N,N should read --LH- N,

Column 23, line l3 "O .28" should read I O 28-- Column 23, lines 0 I throug 14.5, formula should read Column 21+, line 1, "X-X should read --X l second occurrenc and "monobalent" should read monova'lent Column 2h, lines 15 through 20, formula should read CH C 12 I R (Q) 62 R N-R I 9X M Column 2n, line L e, "X" should read ;'X

UNITED STATES PATENT @FFIQE @ERNFKCA'EE 6F CURREQTWN Patent No. 1 709690 Dated January 9 1973 I H Hvman L. Cohen; James R. King, Jr. Louis M. Minsk It is certified that error appears in the above-identifiecl patent and that said Letters Patent are hereby corrected as shown below:

r- Column 2L lines 60 throng 65, formula should read 7 a? R NflR Column 26, line 5, "X" should read ---X Signed and sealed this 10th day of July 1973.

(SEAL) Attest;

EDWARD MiFLETCHERJR. Rene Tegtmeyer Attesting Officer Y Acting Commissioner of Patents 

2. A photographic element comprising a support having thereon at least one photosensitive silver halide emulsion layer and a dye image receiving layer comprising a polymer having at least one-third of the units represented by the following formula in copolymerized relationship with units of at least one other ethylenically unsaturated monomer:
 3. A photographic silver halide emulsion comprising a polyMer having at least one-third of the units represented by the following formula in copolymerized relationship with units of at least one other ethylenically unsaturated monomer: 